Shovel with passive tilt control
First Claim
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1. A mining shovel adapted to dig a bank of material, the mining shovel comprising:
- a boom including an end;
a hoist rope extending over the end of the boom;
an elongated member including a first end and a second end, the member being movable relative to the boom;
a dipper for engaging the bank of material, the dipper being coupled to the second end of the member, the dipper including a digging edge;
a bail assembly including a first end pivotably coupled to the dipper and a second end coupled to the hoist rope passing over the boom;
a pitch brace including a first end pivotably coupled to the bail assembly and a second end pivotably coupled to the member; and
wherein the first end of the pitch brace is pivotably coupled to the bail assembly between the first end of the bail assembly and the second end of the bail assembly.
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Accused Products
Abstract
A mining shovel adapted to dig a bank of material includes a boom having an end, a hoist rope extending over the end of the boom, an elongated member movably coupled to the boom, a dipper for engaging the bank of material, a bail assembly, and a pitch brace. The member includes a first end and a second end. The dipper is coupled to the second end of the member and includes a digging edge. The bail assembly includes a first end pivotably coupled to the dipper and a second end coupled to the hoist rope passing over the boom. The pitch brace includes a first end pivotably coupled to the bail assembly and a second end pivotably coupled to the member.
27 Citations
21 Claims
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1. A mining shovel adapted to dig a bank of material, the mining shovel comprising:
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a boom including an end; a hoist rope extending over the end of the boom; an elongated member including a first end and a second end, the member being movable relative to the boom; a dipper for engaging the bank of material, the dipper being coupled to the second end of the member, the dipper including a digging edge; a bail assembly including a first end pivotably coupled to the dipper and a second end coupled to the hoist rope passing over the boom; a pitch brace including a first end pivotably coupled to the bail assembly and a second end pivotably coupled to the member; and wherein the first end of the pitch brace is pivotably coupled to the bail assembly between the first end of the bail assembly and the second end of the bail assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A dipper assembly for a mining shovel, the mining shovel including a boom, a member movable relative to the boom, and a hoist rope passing over an end of the boom, the dipper assembly comprising:
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a dipper adapted to be coupled to an end of the member, the dipper including a digging edge; a bail including a first end pivotably coupled to the dipper and a second end adapted to be coupled to the hoist rope passing over the end of the boom; a pitch brace including a first end pivotably coupled to the bail and a second end adapted to be pivotably coupled to the member, and wherein the first end of the pitch brace is pivotably coupled to the bail between the first end of the bail and the second end of the bail. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A mining shovel comprising:
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a boom including an end and a hoist rope extending over the end; a member including a first end and a second end, the member being movable relative to the boom; a dipper body pivotably coupled to the second end of the member at a first joint, the dipper body including a digging edge, the dipper body positioned at an angle relative to the member; a bail assembly including a first end pivotably coupled to the dipper body at a second joint and a second end coupled to the hoist rope passing over the boom; and a mechanism for changing the angle of the dipper body relative to the member during a digging operation, the mechanism including a first link defined by a portion of the dipper extending between the first joint and the second joint, a second link pivotably coupled to the bail assembly at a third joint and pivotably coupled to the member at a fourth joint, a third link defined by a portion of the bail assembly extending between the second joint and the third joint, and a fourth link defined by a portion of the member extending between the fourth joint and the first joint. - View Dependent Claims (18, 19, 20, 21)
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Specification